A knit plim-type head protective hat that combines fashion. The hat has a built-in shock absorbing material and the lining is made of mesh material to ensure breathability. Size: M (21.7 - 22.4 inches (55 - 57 cm)); Weight: Approx. 4.3 oz (110 g); Material: Main body: Cotton, polyester, shock absorbing material: styrene elastomer; Accessories: chin strap